Four milligrams once a day? It should start helping within 24 hours. You may need a higher dose depending on how severe and what is causing it. But prednisone is a very dangerous drug.
Benadryl or Allegra or Zyrtec can also be used for hives with none of the side effects. Especially Allegra, as it doesn't cause drowsiness.
- Prednisone Information for Consumers
- Prednisone Information for Healthcare Professionals (includes dosage details)
- Side Effects of Prednisone (detailed)
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